Hello everyone !! I recently put together a system using OMV.
Now I have a question with regards to file transfer performance over samba/cifs. (have not tried the test below with NFS or other methods)
My system has two raid arrays:
7 x 2tb drives in a raid 6 (5900 RPM drives)
2 x 300gig drives in raid 1 (10,000 RPM drives)
I have a quad gigabit network card configured to use LACP (my switch is setup to use LACP as well); the rest of the network is gigabit
When I transfer large files from OMV to single computer over gigabit network I get sustained transfer of 90MB/s to 105MB/s, which I am happy with.
If I have two machines transferring files; One machine from the Raid6 array and one from the raid 1 array, they both transfer at 90MB+ , so the Bonded interface LACP is working and I have higher bandwidth as I should with quad interfaces bonded LACP
However when I transfer files to both machines from the same raid 6 array, my performance goes down significantly. It is if I was transferring just on a single gigabit connection and not through a bonded LACP interface. Combined transfers rate around 120MB/s which is the around the theoretical speed of a gigabit network. If I add a third machine the combined transfer rate remains the same, so as if it only limited to a single gigabit connection.
Has anyone else run into this? Is this an issue with the speed of the raid 6? Two or more machines pulling large data from the same raid array?